Description: 70x20x10mm Grinding Wheel Adapter for Turning an Electric Drill into a Grinder Specifications: Color: Orange/Green/White Size: 70x20x10mm Grit: 120-150 Connecting Shank Diameter: 8mm Suitable for: White Grinding Wheel: For Grinding Stainless Steel Orange Grinding Wheel: For Grinding Stone Materials Green Grinding Wheel: For Grinding Tungsten Steel Features: 1. Provides three types of grinding wheels. 2. Transform your electric drill into a grinder. 3. Durable and convenient. Package Contents: 1 set of grinding wheel adapters Note: Electric drill not included